Matcha palette
Obsidian Reef
From #006743 ink through #209465, #45b07f, #68bd93 to #85daae light, Obsidian Reef is a tetradic progression that holds together at any size. Use it for book covers that read at thumbnail size. The darkest and lightest stops clear AA for large text.
greenmatchafive-stop
#006743
#209465
#45b07f
#68bd93
#85daae
The generator opens with #006743 as the primary and the next two stops as secondary and accent — adjust, check contrast, and export tokens or CSS from there.